How do I migrate emails from IMAP to Office 365?-vMail for Office365 Email Migration Tool ..vMail for Office365 Email Migration Tool supports PST import/export, maintains folder structure, and offers seamless migration with minimal downtime for businesses. By using its tool you can migrate your O365 mailbox to a variety of file formats including PST, OST, EML, EMLX, MBOX, MSG, CSV, HTML, PDF, MHTML, TXT, DOCX, DOCM, and DOC. This flexibility allows for easy archiving, sharing, or future migrations. Prepare Office 365: Sign up for a Microsoft 365 subscription, verify domain ownership, and add users to the Microsoft 365 directory. vMail for Office365 Email Migration Tool.. https://appsource.microsoft.com/en-us/marketplace/apps?search=VSOFTWARE&page=1